US1323142A - Railroad-crossing gate - Google Patents

Description

L. YOUNGBLOOD. RAILROAD CROSSING GAT E.

APPLICATION FILED JUNE 1. l9l9.

Patented Nov. 25, 1919.

2 SHEETS-SHEET 1 E: c c c W I TNESSES L. YOUNGBLOOD.

RAILROAD cnossme GATE.

APPLICATION FILED JUNE 7. i9l9.

Patented Nov. 25, 1919.

" 2 SHEETS-SHEET 2.

WITNESSES INVENTOR. WW Lee [@unyblaod, I BY ATTORNEY.

* "UNITED srnrns LEE YOUNGBLOOD, or HAMMOND, Louisiana.

RAILROAD-CROSSING GATE.

Application filed June '7, 1919. Serial No. 302,500.

To all whom it may concern:

Be it known that I, LEE Yo NcBLooD,-a citizen of the United States, residing at Hammond, in the parish of Tangipahoa and State of Louisiana, have invented new and useful Improvements in Railroad-Crossing Gates, of which the following is a specification.

This invention relates to railroad crossing gates and has for an object the provision of a gate of simple and durable construction, which will be automatically operated to close the crossing against the passage of traific, upon the approach of a train.

Another object is the provision of a train operated gate which normally lies flush with the surface of the crossing and forms a part of the roadway, so as to permit the passage of trafiic when the gate is in a lowered position, but will be automatically raised across the roadway by the action of the approaching train through the means of suitable operating mechanism located some distance 7 in advance of the crossing.

Other objects and advantages of the in venti on will appear as the following description is read in connection with the accompanying drawings.

In the drawings:

Figure l is a plan view showing a railroad crossing of a double-track system, the crossing being equipped with gates constructed in accordance with the presentinvention, the gates being shown in lowered position to provide a clear passage for traffic over the crossing.

Fig. 2 is an enlarged longitudinal sectional view taken on a line with the center of one of the tracks.

Fig. 3 is a transverse section of a track taken on a line with the center of the crossing, the gates being shown in lowered position by full lines and in raised position by dotted lines.

Fig. 4 is a transverse sectional View of a track on a line with the gate operating crank shaft.

Fig. 5 is a transverse sectional view through the crossing on a line with the gate shaft.

Referring to the drawings in detail, like characters of reference denote correspond-' ing parts throughout the several views.

In the drawings, the tracks are lndioated at 10 and the crossing at 11. A. double track Specification of Letters Patent. 7

Patented Nov. 2.5, 1919.

system is illustrated, but as the gates upon each side of-the crossing are independent of one another, a description of one gate and its operating mechanism will suflioe for both, 7

Positioned transversely of the track in advance of the crossing, is a crankshaft 12, the bearings of which are located beneath the rails of the track, as shown at '13. This crank shaft is normally held in an inclined position through the medium of a spring 24, but the position of the crank shaft is such as to avoid contact with any portion of the locomotive or cars of the tram passing thereover. One end of the crank shaft is extended beyond the rails, as

shown at 15 and has mounted upon its end a beveled pinion 16. This pinion engages a similar pinion 17 located upon the end of a relatively long shaft 18. The shaft 18 is mounted in suitable bearings 19 and extends longitudinally of and substantially parallel with the rails of the track.

The shaft 18 is provided with a crank 20, the length of which is substantially co-eX- tensive with the width of the crossing 11.

Secured to the crank 20 is a gate 21 of any suitable or desired construction, and this gate when inits normally lowered position is designed to lie flush with the surface of the roadway, being received in a suitable depression 22 provided in the roadway for this purpose. The gate thus forms a portion of thesurfaceof the roadway when in its lowered position and traffic may pass freely thereover. Its upper'surface is preferably provided with suitable indicia, for ex-. ample, the word Stop, so that when the gate is raised through the means to be presentlydescribed, it will serve as a warning to and prevent the passage of trafiic approaching the crossing. v Mounted in suitable bearings between the railsof the track and disposed longitudinally of the latter, is an operating lever 23, said lever being adapted to overlie the crank shaft 12. The free end of the lever'23 is located in the path of the approaching train and is adapted to be depressed bv the latter to operate the crank shaft and through the medium of the gears 16 and 17 rotates the shaft 18 and raise the gate. Connected to the down-turned extremity of the lever 23 is one end of a spring 24, the opposite end of this spring being permanently secured so as to control the limit of forward movement of the lever 23. The purpose of this spring is to turn the lever to its position over the crank shaft 23 should the said lever be engaged by train backing or moving in a reverse direction. When so engaged the lever 23 will be swung over in its hearings in an opposite direction until after the passage of the train, whereupon the spring 24 will return the said lever to its position over the crank shaft 12.

The invention is susceptible of various changes in its form, proportions and minor details of construction, and the right is here in reserved to make such changes as properly fall within the scope of the appended claims.

Having described the invention, what is claimed is:

1. A railroad crossing comprising a spring controlled crank shaft journaled transversely of the track in advance of the crossing and in normally elevated position, said crank shaft being adapted to be depressed by a passing t am, a shaft disposed parallel to the track and extending over the crossing and operatively connected to the crank shaft, whereby a rotation of the latter will rotate the second mentioned shaft and a gate normally positioned flush with the crossing surface and disposed transversely of the same and operated by depressing the crank shaft.

2. A railroad crossing comprising a spring controlled crank shaft journaled transversely of the track in advance of the cross ing and in normally elevated position, a spring controlled longitudinally extending inclined lever disposed above the crank shaft in the path of the train and adapted to be disposed thereby to operate the crank shaft, a normally lowered gate for the crossing and means connecting the crank shaft and gate for raising the latter to obstruct the crossing when the crank shaft is depressed by the passage of the train.

In testimony whereof I affix my signature.

LEE YOUNGBLOOD.

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